CN113539688A - Electrolyte for aluminum electrolytic capacitor with working voltage of 300-500V and aluminum electrolytic capacitor - Google Patents
Electrolyte for aluminum electrolytic capacitor with working voltage of 300-500V and aluminum electrolytic capacitor Download PDFInfo
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- CN113539688A CN113539688A CN202010275478.0A CN202010275478A CN113539688A CN 113539688 A CN113539688 A CN 113539688A CN 202010275478 A CN202010275478 A CN 202010275478A CN 113539688 A CN113539688 A CN 113539688A
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- China
- Prior art keywords
- electrolyte
- cation
- diazacyclopentene
- acid
- electrolytic capacitor
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- 239000003792 electrolyte Substances 0.000 title claims abstract description 108
- 239000003990 capacitor Substances 0.000 title claims abstract description 63
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 49
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 48
- -1 carboxylic acid anions Chemical class 0.000 claims abstract description 50
- 239000002904 solvent Substances 0.000 claims abstract description 39
- 150000001768 cations Chemical class 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 42
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 claims description 36
- 150000003863 ammonium salts Chemical class 0.000 claims description 32
- 239000003795 chemical substances by application Substances 0.000 claims description 23
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 18
- 239000011888 foil Substances 0.000 claims description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 13
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 claims description 12
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 12
- 239000001257 hydrogen Substances 0.000 claims description 12
- 229910052739 hydrogen Inorganic materials 0.000 claims description 12
- 229910052710 silicon Inorganic materials 0.000 claims description 12
- 239000010703 silicon Substances 0.000 claims description 12
- 230000001737 promoting effect Effects 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 9
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 9
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 9
- 238000006116 polymerization reaction Methods 0.000 claims description 9
- JKTYGPATCNUWKN-UHFFFAOYSA-N 4-nitrobenzyl alcohol Chemical compound OCC1=CC=C([N+]([O-])=O)C=C1 JKTYGPATCNUWKN-UHFFFAOYSA-N 0.000 claims description 8
- 150000002596 lactones Chemical class 0.000 claims description 8
- 125000004432 carbon atom Chemical group C* 0.000 claims description 7
- ACVYVLVWPXVTIT-UHFFFAOYSA-N phosphinic acid Chemical compound O[PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-N 0.000 claims description 7
- 239000005711 Benzoic acid Substances 0.000 claims description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 6
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 6
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 claims description 6
- ATHHXGZTWNVVOU-UHFFFAOYSA-N N-methylformamide Chemical compound CNC=O ATHHXGZTWNVVOU-UHFFFAOYSA-N 0.000 claims description 6
- 229910019142 PO4 Inorganic materials 0.000 claims description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 6
- 229940067597 azelate Drugs 0.000 claims description 6
- 235000010233 benzoic acid Nutrition 0.000 claims description 6
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 6
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- GAEKPEKOJKCEMS-UHFFFAOYSA-N gamma-valerolactone Chemical compound CC1CCC(=O)O1 GAEKPEKOJKCEMS-UHFFFAOYSA-N 0.000 claims description 6
- 239000005543 nano-size silicon particle Substances 0.000 claims description 6
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 claims description 6
- 239000010452 phosphate Substances 0.000 claims description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 6
- 239000002516 radical scavenger Substances 0.000 claims description 6
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 claims description 6
- 235000012239 silicon dioxide Nutrition 0.000 claims description 6
- ARKIFHPFTHVKDT-UHFFFAOYSA-N 1-(3-nitrophenyl)ethanone Chemical compound CC(=O)C1=CC=CC([N+]([O-])=O)=C1 ARKIFHPFTHVKDT-UHFFFAOYSA-N 0.000 claims description 5
- BTJIUGUIPKRLHP-UHFFFAOYSA-N 4-nitrophenol Chemical compound OC1=CC=C([N+]([O-])=O)C=C1 BTJIUGUIPKRLHP-UHFFFAOYSA-N 0.000 claims description 5
- 229920001451 polypropylene glycol Polymers 0.000 claims description 5
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 claims description 4
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 claims description 3
- CFBYEGUGFPZCNF-UHFFFAOYSA-N 2-nitroanisole Chemical compound COC1=CC=CC=C1[N+]([O-])=O CFBYEGUGFPZCNF-UHFFFAOYSA-N 0.000 claims description 3
- IQUPABOKLQSFBK-UHFFFAOYSA-N 2-nitrophenol Chemical compound OC1=CC=CC=C1[N+]([O-])=O IQUPABOKLQSFBK-UHFFFAOYSA-N 0.000 claims description 3
- RTZZCYNQPHTPPL-UHFFFAOYSA-N 3-nitrophenol Chemical compound OC1=CC=CC([N+]([O-])=O)=C1 RTZZCYNQPHTPPL-UHFFFAOYSA-N 0.000 claims description 3
- YQYGPGKTNQNXMH-UHFFFAOYSA-N 4-nitroacetophenone Chemical compound CC(=O)C1=CC=C([N+]([O-])=O)C=C1 YQYGPGKTNQNXMH-UHFFFAOYSA-N 0.000 claims description 3
- OTLNPYWUJOZPPA-UHFFFAOYSA-N 4-nitrobenzoic acid Chemical compound OC(=O)C1=CC=C([N+]([O-])=O)C=C1 OTLNPYWUJOZPPA-UHFFFAOYSA-N 0.000 claims description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 3
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 claims description 3
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 claims description 3
- HSRJKNPTNIJEKV-UHFFFAOYSA-N Guaifenesin Chemical compound COC1=CC=CC=C1OCC(O)CO HSRJKNPTNIJEKV-UHFFFAOYSA-N 0.000 claims description 3
- 229930195725 Mannitol Natural products 0.000 claims description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 3
- SUAKHGWARZSWIH-UHFFFAOYSA-N N,N‐diethylformamide Chemical compound CCN(CC)C=O SUAKHGWARZSWIH-UHFFFAOYSA-N 0.000 claims description 3
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 3
- OTRAYOBSWCVTIN-UHFFFAOYSA-N OB(O)O.OB(O)O.OB(O)O.OB(O)O.OB(O)O.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N Chemical compound OB(O)O.OB(O)O.OB(O)O.OB(O)O.OB(O)O.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N OTRAYOBSWCVTIN-UHFFFAOYSA-N 0.000 claims description 3
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 3
- TVXBFESIOXBWNM-UHFFFAOYSA-N Xylitol Natural products OCCC(O)C(O)C(O)CCO TVXBFESIOXBWNM-UHFFFAOYSA-N 0.000 claims description 3
- 150000004996 alkyl benzenes Chemical group 0.000 claims description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 3
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 3
- 239000004327 boric acid Substances 0.000 claims description 3
- APPIBAQHLDZAAZ-UHFFFAOYSA-N decanedioic acid;n,n-diethylethanamine Chemical compound CCN(CC)CC.OC(=O)CCCCCCCCC(O)=O APPIBAQHLDZAAZ-UHFFFAOYSA-N 0.000 claims description 3
- YQCOSBVAJQCSEA-UHFFFAOYSA-N decanedioic acid;n-ethylethanamine Chemical compound CCNCC.OC(=O)CCCCCCCCC(O)=O YQCOSBVAJQCSEA-UHFFFAOYSA-N 0.000 claims description 3
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 3
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 claims description 3
- 239000000194 fatty acid Substances 0.000 claims description 3
- 229930195729 fatty acid Natural products 0.000 claims description 3
- 150000004665 fatty acids Chemical class 0.000 claims description 3
- 150000002431 hydrogen Chemical class 0.000 claims description 3
- 239000000594 mannitol Substances 0.000 claims description 3
- 235000010355 mannitol Nutrition 0.000 claims description 3
- HEBKCHPVOIAQTA-UHFFFAOYSA-N meso ribitol Natural products OCC(O)C(O)C(O)CO HEBKCHPVOIAQTA-UHFFFAOYSA-N 0.000 claims description 3
- CDAIKWBFCRKCQW-UHFFFAOYSA-N n-ethylethanamine;nonanedioic acid Chemical compound CCNCC.OC(=O)CCCCCCCC(O)=O CDAIKWBFCRKCQW-UHFFFAOYSA-N 0.000 claims description 3
- LQNUZADURLCDLV-IDEBNGHGSA-N nitrobenzene Chemical group [O-][N+](=O)[13C]1=[13CH][13CH]=[13CH][13CH]=[13CH]1 LQNUZADURLCDLV-IDEBNGHGSA-N 0.000 claims description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 3
- DHRLEVQXOMLTIM-UHFFFAOYSA-N phosphoric acid;trioxomolybdenum Chemical compound O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.OP(O)(O)=O DHRLEVQXOMLTIM-UHFFFAOYSA-N 0.000 claims description 3
- IYDGMDWEHDFVQI-UHFFFAOYSA-N phosphoric acid;trioxotungsten Chemical compound O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.OP(O)(O)=O IYDGMDWEHDFVQI-UHFFFAOYSA-N 0.000 claims description 3
- 229920000058 polyacrylate Polymers 0.000 claims description 3
- 229920000223 polyglycerol Polymers 0.000 claims description 3
- 229920000137 polyphosphoric acid Polymers 0.000 claims description 3
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 claims description 3
- 239000000811 xylitol Substances 0.000 claims description 3
- 235000010447 xylitol Nutrition 0.000 claims description 3
- HEBKCHPVOIAQTA-SCDXWVJYSA-N xylitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)CO HEBKCHPVOIAQTA-SCDXWVJYSA-N 0.000 claims description 3
- 229960002675 xylitol Drugs 0.000 claims description 3
- 150000001735 carboxylic acids Chemical class 0.000 claims description 2
- 239000008151 electrolyte solution Substances 0.000 claims description 2
- 238000004078 waterproofing Methods 0.000 claims 3
- JZIWMKUVMWKKLP-UHFFFAOYSA-N azane;4-nitrobenzoic acid Chemical compound [NH4+].[O-]C(=O)C1=CC=C([N+]([O-])=O)C=C1 JZIWMKUVMWKKLP-UHFFFAOYSA-N 0.000 claims 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 28
- 239000001301 oxygen Substances 0.000 description 14
- 229910052760 oxygen Inorganic materials 0.000 description 14
- 238000002360 preparation method Methods 0.000 description 12
- 238000012360 testing method Methods 0.000 description 12
- OWCLRJQYKBAMOL-UHFFFAOYSA-N 2-butyloctanedioic acid Chemical compound CCCCC(C(O)=O)CCCCCC(O)=O OWCLRJQYKBAMOL-UHFFFAOYSA-N 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- 238000009413 insulation Methods 0.000 description 6
- LQNUZADURLCDLV-UHFFFAOYSA-N nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 description 6
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 5
- CQLCSKMKNLINGZ-UHFFFAOYSA-N 2-hexylhexanedioic acid Chemical compound CCCCCCC(C(O)=O)CCCC(O)=O CQLCSKMKNLINGZ-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- BDAGIHXWWSANSR-UHFFFAOYSA-M Formate Chemical compound [O-]C=O BDAGIHXWWSANSR-UHFFFAOYSA-M 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- SATJMZAWJRWBRX-UHFFFAOYSA-N azane;decanedioic acid Chemical compound [NH4+].[NH4+].[O-]C(=O)CCCCCCCCC([O-])=O SATJMZAWJRWBRX-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- GPEVMRFAFMVKHK-UHFFFAOYSA-N azane;dodecanedioic acid Chemical compound [NH4+].[NH4+].[O-]C(=O)CCCCCCCCCCC([O-])=O GPEVMRFAFMVKHK-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/145—Liquid electrolytic capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/022—Electrolytes; Absorbents
- H01G9/035—Liquid electrolytes, e.g. impregnating materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
In order to overcome the problems of poor high-voltage application wide-temperature performance, large leakage current rise and short service life of the capacitor of the electrolyte for the aluminum electrolytic capacitor in the prior art, the invention provides the electrolyte for the aluminum electrolytic capacitor with the working voltage of 300-500V, which comprises a main solvent, a main solute and water, wherein the main solute comprises m-diazacyclopentene cations and organic carboxylic acid anions, the main solvent is selected from lactone compounds, and the content of the water is 0.01-2% by taking the total weight of the electrolyte as 100%. The invention also provides an aluminum electrolytic capacitor, which comprises the electrolyte for the aluminum electrolytic capacitor with the working voltage of 300-500V. The electrolyte for the aluminum electrolytic capacitor with the working voltage of 300-500V provided by the invention has the performances of excellent high voltage resistance, wide use temperature, low leakage current rise value and long service life of the capacitor.
Description
Technical Field
The invention belongs to the field of electrolyte for capacitors, and particularly relates to electrolyte for an aluminum electrolytic capacitor with working voltage of 300-500V and the aluminum electrolytic capacitor.
Background
The aluminum electrolytic capacitor has wide application range, and particularly relates to the fields of household appliances, industry, agriculture, aerospace and the like. The aluminum electrolytic capacitor has the functions of tuning, filtering, coupling, bypassing and energy conversion in the circuit and is cheap, which is not replaceable by other capacitors. At present, the traditional aluminum electrolytic capacitor with the voltage of 300-500V at a high-voltage section mainly uses ethylene glycol as a main solvent. The electrolyte using ethylene glycol as a main solvent system is easy to lose efficacy due to the deterioration of parameters such as capacity attenuation and Dissipation Factor (DF) at a low temperature of-40 ℃. Moreover, as the market gradually widens the demand for aluminum electrolytic capacitors, the wide temperature performance requirements for the electrolyte of the aluminum electrolytic capacitor are also gradually increasing. Therefore, the electrolyte product of the system with ethylene glycol as the main solvent can not meet the market requirement, and the development of a novel system of electrolyte for the aluminum electrolytic capacitor is very necessary.
Lactone solvents are mainly used in low-pressure section aluminum electrolyte within 100V at present. The lactone solvent system electrolyte has excellent wide-temperature performance, and all parameters can still be kept within qualified parameter ranges at the low temperature of-55 ℃.
However, when the high-voltage aluminum electrolytic capacitor with the working voltage of 300-500V is used, a more compact and stable aluminum oxide film needs to be formed on the surface of the positive foil, and the electrolyte with lactone as a main solvent has limited oxygen anion providing capability and dissolution capability for high-voltage solute, so that the problems of poor high-voltage resistance, large leakage current increase and short service life of the aluminum electrolytic capacitor using the electrolyte are caused.
Disclosure of Invention
The invention aims to solve the technical problems of poor high-voltage resistance, high leakage current rise and short service life of an electrolyte for an aluminum electrolytic capacitor in the prior art, and provides the electrolyte for the aluminum electrolytic capacitor with the working voltage of 300-500V and the aluminum electrolytic capacitor.
The technical scheme adopted by the invention for solving the problems is as follows:
on one hand, the invention provides an electrolyte for an aluminum electrolytic capacitor with the working voltage of 300-500V, which comprises the following components:
the main solute comprises a main solvent, a main solute and water, wherein the main solvent comprises a lactone compound, and the main solute comprises a m-diazacyclopentene cation and an organic carboxylic acid anion; the content of the water is 0.01-2% by taking the total weight of the electrolyte as 100%.
Optionally, the total weight of the electrolyte is 100%, the content of the main solvent is 55% to 97%, and the content of the main solute is 0.5% to 12%.
Optionally, the lactone-type compound comprises gamma-butyrolactone and/or gamma-valerolactone.
Optionally, the meta-diazacyclopentene cation comprises one or more of a 1-ethyl-3-methyl meta-diazacyclopentene cation, a 1-ethyl-2, 3-dimethyl meta-diazacyclopentene cation, a 1,2,3, 4-tetramethyl meta-diazacyclopentene cation, a 1, 3-dimethyl meta-diazacyclopentene cation, a 1,2, 3-trimethyl meta-diazacyclopentene cation, a 2-methyl meta-diazacyclopentene cation, a 2-phenyl meta-diazacyclopentene cation, and a 2-propyl-2-meta-diazacyclopentene cation;
the organic carboxylic acid is selected from benzoic acid or a compound shown in a structural formula I:
wherein P is selected from main carbon chains with 1-20 carbon atoms, and R is1、R2、R3、R4Each independently selected from hydrogen, benzene ring, alkyl benzene ring, nitrobenzene ring, C1-8 straight carbon chain, C1-8 branched carbon chain or carboxyl, and R1、R2、R3、R4One or two of which are selected from carboxyl groups.
Optionally, the electrolyte further comprises an auxiliary solvent, wherein the auxiliary solvent comprises one or more of ethylene glycol, diethylene glycol, methoxypropanediol, dimethyl sulfoxide, propylene glycol, glycerol, N-butanol, N-octanol, sulfolane, N-methylformamide, N-dimethylformamide and N, N-diethylformamide, and the content of the auxiliary solvent is 4% to 20% by total weight of the electrolyte being 100%.
Optionally, the electrolyte further comprises an auxiliary solute, wherein the auxiliary solute comprises one or more of dimethylamine, diethylamine, triethylamine, diethylamine azelate, dimethylamine azelate, triethylamine azelate, diethylamine sebacate, triethylamine sebacate and organic carboxylic acid with 5-15 carbon atoms and ammonium salt, and the content of the auxiliary solute is 0.1% -5% by taking the total weight of the electrolyte as 100%.
Optionally, the electrolyte further comprises a waterproof agent, the waterproof agent comprises one or more of mannitol, xylitol, alkyl phosphate, boric acid, ammonium pentaborate, hypophosphorous acid and ammonium salt, phosphoric acid and ammonium salt, phosphate ester, phosphorous acid and ammonium salt, phosphotungstic acid and ammonium salt, phosphomolybdic acid and ammonium salt, and polyphosphoric acid and ammonium salt, and the content of the waterproof agent is 0.05% -3.5% by weight of the total weight of the electrolyte.
Optionally, the electrolyte further comprises a flash fire promoting agent, wherein the flash fire promoting agent comprises one or more of polyvinyl alcohol borate, polyvinyl alcohol with a polymerization degree of 200-5000, polyglycerol with a polymerization degree of 100-5000, polypropylene glycol with a polymerization degree of 200-5000, a silane coupling agent, polypropylene oxide ether, polymerized fatty acid and ammonium salt, nano silicon dioxide, organic silicon and ammonium polyacrylate, and the content of the flash fire promoting agent is 3% -12% by taking the total weight of the electrolyte as 100%.
Optionally, the electrolyte further includes a hydrogen elimination agent, the hydrogen elimination agent includes one or more of hydroquinone, resorcinol, paranitrobenzol, m-nitroacetophenone, p-nitrobenzoic acid, p-nitroammonium formate, p-nitrophenol, m-nitrophenol, o-nitrophenol, p-nitroacetophenone and o-nitroanisole, and the content of the hydrogen elimination agent is 0.1% -1.5% by taking the total weight of the electrolyte as 100%.
In another aspect, the present invention further provides an aluminum electrolytic capacitor, including a positive foil, a negative foil, an electrolytic paper, and the electrolyte solution described in any one of the above.
The electrolyte for the aluminum electrolytic capacitor with the working voltage of 300-500V is prepared by optimizing a formula, taking an inner ester compound as a main solvent, and adding a main solute comprising m-diazacyclopentene cations and organic carboxylic acid anions and water; because a compact and stable alumina film is required on the surface of the positive foil to ensure the insulation and voltage resistance in the working process of the high-voltage aluminum electrolytic capacitor, and the electrolyte using lactones as a main solvent has limited capability of providing oxygen anions, the aluminum electrolytic capacitor has insufficient voltage resistance, large leakage current increase and short service life. The electrolyte has the advantages of excellent high-voltage resistance, wide use temperature range, small low leakage current rise value and long service life of the capacitor by adding a certain content of water and providing sufficient oxygen anions.
Drawings
FIG. 1 is a diagram of a method for testing sparking voltage provided by the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides an electrolyte for a 300-500V aluminum electrolytic capacitor, which comprises the following components:
the main solute comprises a main solvent, a main solute and water, wherein the main solvent comprises lactone compounds, and the main solute consists of m-diazacyclopentene cations and organic carboxylic acid; the water content is 0.01-2% by taking the total weight of the electrolyte as 100%.
The aluminum electrolytic capacitor achieves the effects of improving the voltage resistance of the capacitor, reducing the leakage current and prolonging the service life of the capacitor product by improving the insulating capability of the positive foil. To improve the insulating ability of the positive foil, a dense and stable aluminum oxide film needs to be formed on the surface of the positive foil, and therefore the electrolyte needs to provide sufficient oxygen anions. The oxygen anions form alumina with aluminum ions on the surface of the aluminum foil, and insulation repair is carried out on the damaged part of the surface of the aluminum foil. The better the insulation of the positive foil is, the higher the withstand voltage is, the smaller the leakage current rise in the placing process is; meanwhile, under the condition of high voltage, oxygen anions can repair the damaged oxide film in time, so that the condition of breakdown failure in the use process of the capacitor can be prevented. The electrolyte using the lactone compound as the main solvent has very limited capability of providing oxygen anions, so that the electrolyte of the system has larger defects in the aspects of voltage resistance and leakage current increase, the service life of the capacitor is easily shortened, and the leakage current increase is large. In order to provide enough oxygen anions, the invention adds 0.01-2% of water, the oxygen anions generated by ionization of the water content in the range can provide enough oxygen anions for repairing oxide film, so that the product of the system has the characteristics of excellent high withstand voltage, low leakage current value and service life.
If the moisture content added into the electrolyte is more than 2%, firstly, excessive moisture reacts with the aluminum oxide film to form aluminum hydroxide, so that the compactness of the oxide film on the surface of the positive foil is affected, and the problems that the high-voltage section wide-temperature performance of the electrolyte for the capacitor is poor, the leakage current rises greatly and the service life of the capacitor is shortened are caused. Secondly, a large amount of moisture will generate gas by electrolysis, resulting in a serious over-reflow soldering of the capacitor.
The electrolyte provided by the invention takes a lactone compound with an optimized formula as a main solvent, and a main solute comprising m-diazacyclopentene cations and organic carboxylic acid anions and water are added, so that the high-voltage resistance of the aluminum electrolytic capacitor is poor, the leakage current is increased greatly and the service life of the aluminum electrolytic capacitor is short due to the fact that a compact and stable aluminum oxide film formed on the surface of a positive foil of the aluminum electrolytic capacitor needs oxygen anions and the lactone compound is limited to be used as the main solvent to provide the oxygen anions.
The lactone solvent system can be applied to high-voltage aluminum electrolytic capacitors with the working voltage of 300-500V.
In some embodiments of the present invention, the content of the main solvent is 55% to 97% and the content of the main solute is 0.5% to 12% based on 100% by weight of the total electrolyte.
In some embodiments of the invention, the lactone-based compound comprises gamma-butyrolactone and/or gamma-valerolactone.
Preferably, gamma-butyrolactone is used as the main solvent.
In some embodiments of the invention, the meta-diazacyclopentene cation comprises one or more of a 1-ethyl-3-methyl meta-diazacyclopentene cation, a 1-ethyl-2, 3-dimethyl meta-diazacyclopentene cation, a 1,2,3, 4-tetramethyl meta-diazacyclopentene cation, a 1, 3-dimethyl meta-diazacyclopentene cation, a 1,2, 3-trimethyl meta-diazacyclopentene cation, a 2-methyl meta-diazacyclopentene cation, a 2-phenyl meta-diazacyclopentene cation, and a 2-propyl-2-meta-diazacyclopentene cation;
the organic carboxylic acid is selected from benzoic acid or a compound represented by the structural formula I:
wherein P is selected from main carbon chains with 1-20 carbon atoms, and R is1、R2、R3、R4Each independently selected from hydrogen, benzene ring, alkyl benzene ring, nitrobenzene ring, C1-8 straight carbon chain, C1-8 branched carbon chain or carboxyl, and R1、R2、R3、R4One or two of which are selected from carboxyl groups.
In some embodiments of the present invention, the electrolyte further comprises an auxiliary solvent, the auxiliary solvent comprising one or more of ethylene glycol, diethylene glycol, methoxypropanediol, dimethyl sulfoxide, propylene glycol, glycerol, N-butanol, N-octanol, sulfolane, N-methylformamide, N-dimethylformamide, and N, N-diethylformamide.
Preferably, the auxiliary solvent is selected from the group consisting of ethylene glycol, a combination between ethylene glycol and sulfolane.
The content of the auxiliary solvent is 4-20% by taking the total weight of the electrolyte as 100%.
When the main solvent is selected from lactone compounds, the invention in a preferred embodiment will often add some additives, and since the additives are poorly soluble in the lactone compounds, it is necessary to add an auxiliary solvent to aid in the dissolution of the additives.
In some embodiments of the present invention, the electrolyte further includes an auxiliary solute, the auxiliary solute includes one or more of dimethylamine, diethylamine, triethylamine, diethylamine azelate, dimethylamine azelate, triethylamine azelate, diethylamine sebacate, triethylamine sebacate, and organic carboxylic acids with 5-15 carbon atoms and ammonium salts, and the content of the auxiliary solute is 0.1% -5% by total weight of the electrolyte as 100%.
The organic carboxylic acid and ammonium salt with 5-15 carbon atoms comprise adipic acid and ammonium salt, benzoic acid and ammonium salt, sebacic acid and ammonium salt and ammonium dodecanedioate.
In some embodiments of the present invention, the electrolyte further includes a waterproof agent, and the waterproof agent includes one or more of mannitol, xylitol, alkyl phosphate, boric acid, ammonium pentaborate, hypophosphorous acid and ammonium salt, phosphoric acid and ammonium salt, phosphate ester, phosphorous acid and ammonium salt, phosphotungstic acid and ammonium salt, phosphomolybdic acid and ammonium salt, and polyphosphoric acid and ammonium salt, and the content of the waterproof agent is 0.05% to 3.5% based on 100% of the total weight of the electrolyte.
In the invention, the use of the waterproof agent makes the aluminum oxide film on the surface of the aluminum electrolytic capacitor densified, and further improves the high-voltage resistance of the electrolyte and reduces the return rise of leakage current.
In some embodiments of the invention, the electrolyte further comprises a flash fire promoting agent, wherein the flash fire promoting agent comprises one or more of polyvinyl alcohol borate, polyvinyl alcohol with a polymerization degree of 200-5000, polyglycerol with a polymerization degree of 100-5000, polypropylene alcohol with a polymerization degree of 200-5000, a silane coupling agent, polypropylene oxide ether, polymerized fatty acid and ammonium salt, nano silicon dioxide, organic silicon and ammonium polyacrylate, and the content of the flash fire promoting agent is 3% -12% by taking the total weight of the electrolyte as 100%.
The flash-fire promoting agent is added, so that the effect of improving the flash-fire voltage of the electrolyte is obvious, the influence on the conductivity is little, the service life and the stability of the capacitor can be prolonged, and the leakage current rise is improved.
In some embodiments of the present invention, the electrolyte further comprises a hydrogen scavenger, wherein the hydrogen scavenger comprises one or more of hydroquinone, resorcinol, paranitrobenzyl alcohol, m-nitroacetophenone, p-nitrobenzoic acid, p-nitroammonium formate, p-nitrophenol, m-nitrophenol, o-nitrophenol, p-nitroacetophenone and o-nitroanisole, and the content of the hydrogen scavenger is 0.1% to 1.5% based on 100% of the total weight of the electrolyte.
The invention also provides an aluminum electrolytic capacitor, which comprises a positive foil, a negative foil, electrolytic paper and the electrolyte.
The present invention will be further illustrated by the following examples. It is to be understood that the present invention is not limited to the following embodiments, and methods are regarded as conventional methods unless otherwise specified. Materials are commercially available from the open literature unless otherwise specified.
Example 1
The present embodiment is to illustrate the electrolyte for an aluminum electrolytic capacitor having a working voltage of 300 to 500V and the method for preparing the same disclosed in the present invention.
The electrolyte comprises the following components by taking the total weight of the electrolyte as 100 percent:
(1) 86.0 percent of gamma-butyrolactone
(2) 1.5% of 1-ethyl-3-methyl m-diazacyclo pentene cation
(3) 2-butyl-octanedioic acid 1.5%
(4) 10 percent of organic silicon
(5) 0.5 percent of p-nitrobenzol
(6) 0.5 percent of water
The preparation method comprises the following steps:
(1) according to the components, 1-ethyl-3-methyl m-diazacyclo pentene cation and 2-butyl-suberic acid are mixed to prepare a main solute;
(2) according to the components, gamma-butyrolactone, main solute, organic silicon, p-nitrobenzyl alcohol and water are uniformly mixed to prepare the electrolyte, which is marked as S1.
Example 2
The present embodiment is to illustrate the electrolyte for an aluminum electrolytic capacitor having a working voltage of 300 to 500V and the method for preparing the same disclosed in the present invention.
The electrolyte comprises the following components by taking the total weight of the electrolyte as 100 percent:
(1) gamma-butyrolactone 77.9%
(2) 1-Ethyl-3-methyl-m-diazacyclopentene cation 5.5%
(3) 2-butyl-octanedioic acid 5.5%
(4) Hypophosphorous acid and ammonium salt 0.1%
(5) 10 percent of organic silicon
(6) 0.5 percent of p-nitrobenzol
(7) 0.5 percent of water
The preparation method comprises the following steps:
(1) according to the components, 1-ethyl-3-methyl m-diazacyclo pentene cation and 2-butyl-suberic acid are mixed to prepare a main solute;
(2) according to the components, gamma-butyrolactone, main solute, hypophosphorous acid and ammonium salt, organic silicon, p-nitrobenzyl alcohol and water are uniformly mixed to prepare the electrolyte, which is marked as S2.
Example 3
The present embodiment is to illustrate the electrolyte for an aluminum electrolytic capacitor having a working voltage of 300 to 500V and the method for preparing the same disclosed in the present invention.
The electrolyte comprises the following components by taking the total weight of the electrolyte as 100 percent:
(1) gamma-butyrolactone 74.5%
(2) 1-Ethyl-3-methyl-m-diazacyclopentene cation 5.5%
(3) 2-hexyl-adipic acid 5.5%
(4) Ethylene glycol 5%
(5) Hypophosphorous acid and ammonium salt 0.1%
(6) 8 percent of inorganic nano silicon dioxide
(7) 0.7 percent of p-nitrobenzol
(8) 0.7 percent of water
The preparation method comprises the following steps:
(1) according to the components, 1-ethyl-3-methyl m-diazacyclo pentene cation and 2-hexyl-adipic acid are mixed to prepare a main solute;
(2) uniformly mixing gamma-butyrolactone, main solute, ethylene glycol, hypophosphorous acid and ammonium salt, inorganic nano silicon dioxide, p-nitrobenzyl alcohol and water according to the components to prepare an electrolyte labeled as S3.
Example 4
The present embodiment is to illustrate the electrolyte for an aluminum electrolytic capacitor having a working voltage of 300 to 500V and the method for preparing the same disclosed in the present invention.
The electrolyte comprises the following components by taking the total weight of the electrolyte as 100 percent:
(1) gamma-butyrolactone 74.0%
(2)1,2,3, 4-tetramethyl m-diazacyclo-pentene cation 7%
(3) 2-hexyl-adipic acid 7%
(4) Ammonium sebacate 0.5%
(5) 10 percent of inorganic nano silicon dioxide
(6) 0.5 percent of m-nitroacetophenone
(7) 1.0 percent of water
The preparation method comprises the following steps:
(1) according to the components, 1,2,3, 4-tetramethyl m-diazacyclo pentene cation and 2-hexyl-adipic acid are mixed to prepare a main solute;
(2) uniformly mixing gamma-butyrolactone, a main solute, ammonium sebacate, inorganic nano-silica, organic silicon, m-nitroacetophenone and water according to the components to prepare an electrolyte labeled as S4.
Comparative example 1
The comparative example is used for comparing and explaining the electrolyte for the aluminum electrolytic capacitor with the working voltage of 300-500V and the preparation method thereof.
The comparative electrolyte comprises the following components by taking the total weight of the electrolyte as 100 percent:
(1) gamma-butyrolactone 80.5%
(2)1,2,3, 4-tetramethyl m-diazacyclo-pentene cation 5.5%
(3) Benzoic acid 5.5%
(4) Organosilicon 8%
(5) 0.5 percent of p-nitrophenol
The preparation method comprises the following steps:
(1) according to the components, 1,2,3, 4-tetramethyl m-diazacyclo pentene cation and benzoic acid are mixed to prepare a main solute;
(2) a comparative electrolyte, labeled D1, was prepared by uniformly mixing gamma-butyrolactone, primary solute, silicone, and paranitrophenol according to the above components.
Comparative example 2
The comparative example is used for comparing and explaining the electrolyte for the aluminum electrolytic capacitor with the working voltage of 300-500V and the preparation method thereof.
The comparative electrolyte comprises the following components by taking the total weight of the electrolyte as 100 percent:
(1) 86.5 percent of gamma-butyrolactone
(2) 1.5% of 1-ethyl-3-methyl m-diazacyclo pentene cation
(3) 2-butyl-octanedioic acid 1.5%
(4) 10 percent of organic silicon
(5) 0.5 percent of p-nitrobenzol
The preparation method comprises the following steps:
(1) according to the components, 1-ethyl-3-methyl m-diazacyclo pentene cation and 2-butyl-suberic acid are mixed to prepare a main solute;
(2) the comparative electrolyte, labeled as D2, was prepared by uniformly mixing gamma-butyrolactone, primary solute, silicone, and p-nitrobenzyl alcohol with the above components.
Comparative example 3
The comparative example is used for comparing and explaining the electrolyte for the aluminum electrolytic capacitor with the working voltage of 300-500V and the preparation method thereof.
The comparative electrolyte comprises the following components by taking the total weight of the electrolyte as 100 percent:
(1) ethylene glycol 86.5%
(2) 1.5% of 1-ethyl-3-methyl m-diazacyclo pentene cation
(3) 2-butyl-octanedioic acid 1.5%
(4) 10 percent of organic silicon
(5) 0.5 percent of p-nitrobenzol
The preparation method comprises the following steps:
(1) according to the components, 1-ethyl-3-methyl m-diazacyclo pentene cation and 2-butyl-suberic acid are mixed to prepare a main solute;
(2) the comparative electrolyte, labeled as D3, was prepared by mixing ethylene glycol, primary solute, silicone, and p-nitrobenzyl alcohol uniformly in the above-described proportions.
Comparative example 4
The comparative example is used for comparing and explaining the electrolyte for the aluminum electrolytic capacitor with the working voltage of 300-500V and the preparation method thereof.
The comparative electrolyte comprises the following components by taking the total weight of the electrolyte as 100 percent:
(1) 84.0 percent of gamma-butyrolactone
(2) 1.5% of 1-ethyl-3-methyl m-diazacyclo pentene cation
(3) 2-butyl-octanedioic acid 1.5%
(4) 10 percent of organic silicon
(5) 0.5 percent of p-nitrobenzol
(6) 2.5 percent of water
The preparation method comprises the following steps:
(1) according to the components, 1-ethyl-3-methyl m-diazacyclo pentene cation and 2-butyl-suberic acid are mixed to prepare a main solute;
(2) according to the components, gamma-butyrolactone, main solute, organic silicon, p-nitrobenzyl alcohol and water are uniformly mixed to prepare a comparative electrolyte, which is marked as D4.
Performance testing
The performance tests were performed on the S1 to S4 prepared above and comparative samples D1 to D4.
1. The prepared S1 to S4 and comparative samples D1 to D4 were subjected to conductivity and sparking voltage tests, respectively.
(1) Electrical conductivity of
The conductivities of the S1 to S4 prepared above and the comparative samples D1 to D4 were respectively measured using a conductivity meter.
(2) Sparking voltage
The flashover voltages of the S1 to S4 prepared above and comparative samples D1 to D4 were tested using a foil guide strip (not formed) having a size of 1.0X 0.5cm as shown in FIG. 1 by the test method, wherein the test conditions were voltage: the temperature of the mixture is 800V,
current: 20mA, temperature: at 30 ℃.
The test results obtained are filled in Table 1.
TABLE 1
As is clear from Table 1, examples S1 to S4 showed higher conductivity and higher sparking voltage than D3 with the lactone as the main solvent and ethylene glycol as the main solvent.
2. Testing and calculating the capacitance value (C), the delta C (%), the dissipation factor loss angle (DF), the impedance (Z) and the impedance ratio of the prepared electrolytes S1-S4 and comparative samples D1-D4 at the temperature of 20 ℃ and-55 ℃ respectively, wherein the specification and the size of the capacitor core package are selected as follows: 400V6.8 μ F, Φ 10 × 12.
The test results obtained are filled in table 2.
TABLE 2
As can be seen from Table 2, in examples S1 to S4 to which water was added, the performance requirements were satisfied at the low temperature of-55 ℃ while the performance requirements were not satisfied at the low temperature of-55 ℃ when excessive water was added.
3. The prepared S1-S4 and comparative samples D1-D4 are subjected to a load test at a high temperature of 125 ℃, and the capacitance value (Cap), the dissipation factor loss angle (DF), the leakage current rise value (LC), the Delta C (%) and the gas generation condition of the capacitor are tested, wherein the specification and the size of the core package of the capacitor are selected as follows: 400V6.8 μ F, Φ 10 × 12.
The test results obtained are filled in Table 3.
TABLE 3
As can be seen from Table 3, the water-added examples S1-S4 can satisfy the service life requirement of 5000H at 125 ℃ within the qualified range when the load life is 5000H at 125 ℃; comparative examples D1-D2 lack the oxygen anion that moisture provided, lead to in the load life-span, fail to repair the damaged oxide film in time, the insulating property is reduced, lead to breaking out the inefficacy before 2000H midway; d3 using ethylene glycol as a main solvent has the defects that each parameter exceeds the standard and fails due to insufficient pressure resistance, serious gas generation and opening of a convex bottom; comparative example No. D4 was found to have a breakdown failure before 2000H midway because excessive water was added to destroy the oxide film and lower the insulation.
4. The prepared S1-S4 and comparative samples D1-D4 were subjected to storage tests at high temperature of 105 ℃ to test the capacitance (Cap), dissipation factor loss angle (DF), leakage current rise (LC) and Δ C (%) of the capacitor, wherein the specification and dimensions of the capacitor core package were selected: 400V6.8 μ F, Φ 10 × 12.
The test results obtained are filled in table 4.
TABLE 4
As is clear from Table 4, the leakage current rise values of examples S1 to S4 were all small, and the leakage current rise was serious as compared with comparative examples D1 to D4. As can be seen by analysis, the comparative examples D1-D3 lack oxygen anions, the alumina film cannot be repaired in time, the insulation of the alumina film is reduced, and the leakage current is increased rapidly, and the comparative example D4 with excessive water added destroys the alumina film, and the insulation of the alumina film is reduced, and the leakage current is increased rapidly.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The electrolyte for the aluminum electrolytic capacitor with the working voltage of 300-500V is characterized by comprising the following components:
a primary solvent, a primary solute, and water;
wherein the primary solvent comprises a lactone compound;
the primary solute comprises a meta-diazacyclopentene cation and an organic carboxylic acid anion;
the content of the water is 0.01-2% by taking the total weight of the electrolyte as 100%.
2. The electrolyte of claim 1, wherein the primary solvent is 55-97% and the primary solute is 0.5-12% based on 100% of the total weight of the electrolyte.
3. The electrolyte of claim 1, wherein the lactone-based compound comprises gamma-butyrolactone and/or gamma-valerolactone.
4. The electrolyte of claim 1, wherein the meta-diazacyclopentene cation comprises one or more of a 1-ethyl-3 methyl meta-diazacyclopentene cation, a 1-ethyl-2, 3-dimethyl meta-diazacyclopentene cation, a 1,2,3, 4-tetramethyl meta-diazacyclopentene cation, a 1, 3-dimethyl meta-diazacyclopentene cation, a 1,2, 3-trimethyl meta-diazacyclopentene cation, a 2-methyl meta-diazacyclopentene cation, a 2-phenyl meta-diazacyclopentene cation, and a 2-propyl-2-meta-diazacyclopentene cation;
the organic carboxylic acid is selected from benzoic acid or a compound shown in a structural formula I:
wherein P is selected from main carbon chains with 1-20 carbon atoms, and R is1、R2、R3、R4Each independently selected from hydrogen, benzene ring, alkyl benzene ring, nitrobenzene ring, C1-8 straight carbon chain, C1-8 branched carbon chain or carboxyl, and R1、R2、R3、R4One or two of which are selected from carboxyl groups.
5. The electrolyte of claim 2, further comprising an auxiliary solvent, wherein the auxiliary solvent comprises one or more of ethylene glycol, diethylene glycol, methoxypropanediol, dimethyl sulfoxide, propylene glycol, glycerol, N-butanol, N-octanol, sulfolane, N-methylformamide, N-dimethylformamide, and N, N-diethylformamide, and the content of the auxiliary solvent is 4% to 20% based on 100% by weight of the total electrolyte.
6. The electrolyte according to claim 2, wherein the electrolyte further comprises an auxiliary solute, the auxiliary solute comprises one or more of dimethylamine, diethylamine, triethylamine, diethylamine azelate, dimethylamine azelate, triethylamine azelate, diethylamine sebacate, triethylamine sebacate and organic carboxylic acids with 5-15 carbon atoms and ammonium salts, and the content of the auxiliary solute is 0.1-5% based on the total weight of the electrolyte as 100%.
7. The electrolyte of claim 2, wherein the electrolyte further comprises a water-proofing agent, and the water-proofing agent comprises one or more of mannitol, xylitol, alkyl phosphate, boric acid, ammonium pentaborate, hypophosphorous acid and ammonium salt, phosphoric acid and ammonium salt, phosphate ester, phosphorous acid and ammonium salt, phosphotungstic acid and ammonium salt, phosphomolybdic acid and ammonium salt, and polyphosphoric acid and ammonium salt, and the content of the water-proofing agent is 0.05-3.5% based on 100% of the total weight of the electrolyte.
8. The electrolyte according to claim 2, further comprising a flash ignition promoting agent, wherein the flash ignition promoting agent comprises one or more of polyvinyl alcohol borate, polyvinyl alcohol with a polymerization degree of 200-5000, polyglycerol with a polymerization degree of 100-5000, polypropylene glycol with a polymerization degree of 200-5000, a silane coupling agent, polypropylene oxide ether, polymerized fatty acid and ammonium salt, nano silicon dioxide, organic silicon and ammonium polyacrylate, and the content of the flash ignition promoting agent is 3-12% based on 100% of the total weight of the electrolyte.
9. The electrolyte of claim 2, further comprising a hydrogen scavenger, wherein the hydrogen scavenger comprises one or more of hydroquinone, resorcinol, p-nitrobenzyl alcohol, m-nitroacetophenone, p-nitrobenzoic acid, ammonium p-nitrobenzoate, p-nitrophenol, m-nitrophenol, o-nitrophenol, p-nitroacetophenone and o-nitroanisole, and the content of the hydrogen scavenger is 0.1% to 1.5% based on 100% of the total weight of the electrolyte.
10. An aluminum electrolytic capacitor comprising a positive foil, a negative foil, electrolytic paper, and the electrolyte solution according to any one of claims 1 to 9.
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|---|---|---|---|---|
| JPH09148196A (en) * | 1995-11-27 | 1997-06-06 | Elna Co Ltd | Aluminium electrolytic capacitor and electrolyte for the aluminium electrolytic capacitor drive use |
| JPH1116785A (en) * | 1997-04-30 | 1999-01-22 | Nippon Chemicon Corp | Electrolytic solution for electrolytic capacitor |
| JP2011091282A (en) * | 2009-10-26 | 2011-05-06 | Sanyo Chem Ind Ltd | Electrolyte for aluminum electrolytic capacitor, and aluminum electrolytic capacitor using the same |
| US20120235072A1 (en) * | 2009-11-26 | 2012-09-20 | Sanyo Chemical Industries, Ltd. | Electrolytic solution for aluminum electrolytic capacitor, and aluminum electrolytic capacitor using same |
| US20140284514A1 (en) * | 2011-10-14 | 2014-09-25 | Sanyo Chemical Industries, Ltd. | Electrolytic solution for aluminum electrolyte capacitor, and aluminum electrolyte capacitor using the same |
| WO2015114931A1 (en) * | 2014-01-28 | 2015-08-06 | 富山薬品工業株式会社 | Electrolyte solution for driving electrolytic capacitor |
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|---|---|
| CN113539688B (en) | 2023-05-12 |
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